Freezer Operation Manual

Ultra-Low Freezer Operation Manuali.Series®

360172-A/E

i.SeriesiUF118iUF126

i.SeriesiUF116iUF124

Document Updates The document is furnished for information use only, is subject to change without notice and should not be construed as a commitment by Helmer Scientific. Helmer Scientific assumes no responsibility or liability for any errors or inaccuracies that may appear in the informational content contained in this material. For the purpose of clarity, Helmer Scientific considers only the most recent revision of this document to be valid.

Notices and DisclaimersConfidential / Proprietary NoticesUse of any portion(s) of this document to copy, translate, disassemble or decompile, or create or attempt to create by reverse engineering or otherwise the information from Helmer Scientific products is expressly prohibited.

Copyright and TrademarkCopyright © 2021 Helmer, Inc. Helmer®, i.Series®, i.C³®, and Rel.i™ are registered trademarks or trademarks of Helmer, Inc. in the United States of America. All other trademarks and registered trademarks are the property of their respective owners. Helmer, Inc., doing business as (DBA) Helmer Scientific and Helmer.

DisclaimerThis manual is intended as a guide to provide the operator with necessary instructions on the proper use and maintenance of certain Helmer Scientific products.Any failure to follow the instructions as described could result in impaired product function, injury to the operator or others, or void applicable product warranties. Helmer Scientific accepts no responsibility for liability resulting from improper use or maintenance of its products.The screenshots and component images appearing in this guide are provided for illustrative purposes only, and may vary slightly from the actual software screens and/or product components.

Helmer Scientific14400 Bergen BoulevardNoblesville, IN 46060 USAwww.helmerinc.com Part No. 360172-A Rev E

Document HistoryRevision Date CO Supersession Revision Description

A 10 APR 2014* 9339 n/a Initial release.

B 12 DEC 2014 10128 B supersedes A Captured product changes prior to product launch

C 05 JAN 2015 11402 C supersedes B Added instructions for removal of compressor restraints. Updated initial charge values in Specifications table.

D 17 FEB 2017 12611 D supersedes C Reformatted for documentation consistency and ease of use. Updated and added content and screenshots to i.Series Operation as required by software platform changes.

E 15 JUL 2021 16126 E supersedes D

Added note to Placement and Leveling section regarding use of GFI/GFCI outlets. Added note regarding proper conditions for moving shelves. Updated the use of Caution and Warning symbols. Updated the Clean Filter alarm description in the Active Alarms section. Removed Preventive Maintenance Schedule as it is covered in the ULT Service Manual (360173-A) Updated Refrigerant System Specification table. Updated Compliance section

* Date submitted for Change Order review. Actual release date may vary.

Helmer Scientific i.Series® Ultra-Low Freezer Operation Manual

360172-A/E ii

Contents

1 About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31.1 Safety Precautions and Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31.2 General Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52.1 Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52.2 Remove Compressor Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52.3 Placement and Leveling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52.4 Rear Stand-Offs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.5 AC Power Cord Retainer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.6 Storage Shelves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.7 Chart Recorder (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3 i.Series Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.1 Initial Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93.3 Change Temperature Setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103.4 Set Alarm Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113.5 Active Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123.6 Mute and Disable Active Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4 Min/Max Temperature Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5 Access Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145.1 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145.2 Open Freezer with Access Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

6 Product Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166.1 Operating Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

7 Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187.1 Regulatory Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187.2 Electromagnetic Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Appendix A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Application Icons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Appendix B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Exterior Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Interior Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21


360172-A/E 3

1 About this ManualThis manual provides information on how to use the i.Series® Ultra-Low freezer. It is intended for use by end users of the freezer and authorized service technicians.Models are indicated by a distinguishing model number that corresponds to the series, type, number of doors and capacity of the freezer. For example, “iUF124” refers to an i.Series Ultra-Low Freezer with 1 door and a capacity of 24 cu ft. This manual covers all ultra-low freezers, which may be identified singly, or by their size.

1.1 Safety Precautions and Symbols

Symbols found in this document

The following symbols are used in this manual to emphasize certain details for the user:

Task Indicates procedures which need to be followed.

Note Provides useful information regarding a procedure or operating technique when using Helmer Scientific products.

NOTICE Advises the user against initiating an action or creating a situation which could result in damage to equipment; person injury is unlikely.

Symbols found on the units

The following symbols may be found on the freezer or freezer packaging.

Caution: Safety hazard to operator or service technician

Caution: Electrostatic discharge (ESD) hazard

Caution: Electrocution/shock hazard Refer to documentation


360172-A/E 4

Avoiding Injury

Review safety instructions before installing, using, or maintaining the equipment. ♦ Before moving unit, remove contents from the chamber. ♦ Before moving unit, ensure door is closed and latched, and casters are unlocked and free of debris. ♦ Before moving unit, disconnect the AC power cord and secure the cord. ♦ When moving unit, use assistance from a second person. ♦ Never physically restrict any moving component. ♦ Avoid removing electrical service panels and access panels unless so instructed. ♦ Use appropriate gloves when handling cold internal components and stored inventory. ♦ Keep hands away from pinch points when closing the door. ♦ Avoid sharp edges when working inside the electrical compartment and refrigeration compartment. ♦ Ensure biological materials are stored at recommended temperatures determined by standards, literature, or good

laboratory practices. ♦ Total freezer weight (including contents) is not to exceed 1400 lbs (635 kg). ♦ Use manufacturer supplied power cord only. ♦ Using the equipment in a manner not specified by Helmer may impair the protection provided by the equipment. ♦ Ensure biological materials are stored safely, in accordance with all applicable organizational, regulatory, and

legal requirements. ♦ The freezer is not considered to be a storage cabinet for flammable or hazardous materials. ♦ REQUIRED: Decontaminate parts prior to sending for service or repair. Contact Helmer or your distributor for decontamination

instructions and a Return Authorization Number.

1.2 General RecommendationsIntended UseHelmer ultra-low freezers are intended to provide a controlled temperature environment at ultra-low temperatures required for the storage of biological materials, pharmaceuticals, and reagents used in a research or clinical laboratory.The devices referenced in this manual are intended to be operated by personnel who have procedures in place for meeting FDA, AABB, or any other applicable regulations for the processing and storage of biological materials, pharmaceuticals, and reagents.

General UseAllow freezer to come to room temperature before switching power on.During initial startup, the high temperature alarm may sound while the freezer reaches operating temperature.

NOTEThis unit is not a “rapid-freezing” device. Freezing large quantities of liquid, or high-water content items, will temporarily increase the chamber temperature and will cause the compressors to operate for a prolonged period of time.

Initial LoadingAllow chamber temperature to stabilize at the setpoint before storing pre-frozen product.

Product Loading GuidelinesWhen loading your freezer, take care to observe the following guidelines:

♦ Never load freezers beyond capacity. ♦ Always store items within shelves.


360172-A/E 5

2 Installation2.1 Location ♦ Has a dedicated 15 A grounded circuit with dedicated single point receptacle meeting the electrical requirements listed on the product

specification label. ♦ Is clear of direct sunlight, high temperature sources, and heating and air conditioning vents. ♦ Minimum 8” (203 mm) above, and minimum 4” (102 mm) behind. ♦ Meets limits specified for ambient temperature and relative humidity.

2.2 Remove Compressor Restraints1. Using ½” socket and ½” open-end wrench, remove the hex bolt securing the compressor restraint under the high-stage compressor. Set hex bolt, washer and hex nut aside for use in installing rubber compressor foot (Qty.: 1 per compressor).2. Lift compressor mounting plate slightly and slide restraint out. 3. Remove rubber compressor foot and metal spacer from accessories box. 4. Slide the compressor foot under the compressor mounting plate and align hole in the foot with opening in the bottom of the freezer and mounting plate.5. Insert metal spacer in the center of rubber compressor foot.6. Insert hex bolt through bottom of freezer and up through compressor foot and mounting plate.7. Place washer and hex nut over the protruding hex bolt. Hand-thread hex nut.8. Secure using torque wrench, and tighten to 78.8 in-lbs.9. Repeat steps 1 – 8 for low-stage compressor.

NoteWhen removing the compressor restraint from the low-stage compressor, approach from the left side of the compressor to avoid damage to the copper tubing mounted to the floor of the refrigeration compartment.

10. Place rear panel over refrigeration compartment and align holes in panel with threaded holes in freezer. 11. Hand thread screws and tighten using #2 Phillips screwdriver .

2.3 Placement and Leveling

NOTICE• To prevent tipping, ensure door is closed and latched, and casters are unlocked and free of debris before moving freezer.• The freezer is extremely heavy. Helmer recommends two people work together to move the freezer.• Helmer does not recommend operating this unit on a GFI/GFCI outlet.

1. Ensure all casters are unlocked and door is closed and latched.2. Roll freezer into place and lock casters.3. Adjust leveling feet (if installed) to ensure freezer is level.

Compressor restraint

Rubber foot with spacer

Rubber foot installed

Rear panel


360172-A/E 6

2.4 Rear Stand-Offs

NOTICEThe rear stand-offs include a hole to accept a threaded fastener for anchoring the freezer to a wall. The rear stand-offs do not provide a secure means to anchor the freezer to the wall that can be considered resistant to seismic events.

Notes• Installation of the rear stand-offs is optional.• Anchoring the freezer to the wall is optional.• Hardware to anchor the freezer to the wall is not provided with the freezer. The end user is responsible for determining the best method to anchor the freezer to the wall.

Install Rear Stand-Offs

RearStand-off

1. Align the holes in the stand-offs with the corresponding threaded holes on the back of the freezer.2. Insert the 3/8” hex head cap screws through the holes in the stand-offs.3. Hand-thread the cap screws into the threaded holes.4. Using a 9/16” open-ended wrench, tighten the cap screws.

2.5 AC Power Cord Retainer

NOTICE• Do not position the freezer where it will prevent access to the power cord disconnect at the wall receptacle.• Use only manufacturer supplied power cord.

Install Power Cord Retainer

1. Insert the power cord into the receptacle on rear of the cabinet.2. Slide the retainer upward, engaging the groove in the power plug with the slot in the retainer.3. Align the holes in the retainer with the corresponding holes on the cabinet.4. Insert the screws with lock washers through the retainer and into the holes in the cabinet.5. Using a #2 Phillips screwdriver, tighten the screws.

Power Cord Retainer


360172-A/E 7

2.6 Storage Shelves

Note• Shelf clips must be installed so the horizontal section is oriented upward.• Helmer recommends moving storage racks before the unit reaches the setpoint temperature.

Install Shelves with Shelf Clips

1. Open the chamber door and all inner doors.2. Install shelf clips on the shelf standards at the marked locations.3. Beginning with the bottom shelf, insert the shelf into the chamber at an angle.4. Rotate the shelf so it sits flat on the shelf clips.5. Working from the bottom to the top, install the remaining shelves as described in steps 3 and 4.6. Close the inner doors and the chamber door.

Shelf Clip Installed shelves

2.7 Chart Recorder (optional)

Chart Recorder with paper installed

Install / Replace Chart Paper

NoteFor accurate temperature reading, ensure current time is aligned with time line groove when the chart knob is fully tightened.

Chart recorder stylus and time line groove

1. Press and hold C button. When stylus begins to move left, release button. The LED flashes.2. When stylus stops moving, remove chart knob then move knob up and away.3. Place chart paper on chart recorder.4. Gently lift stylus and rotate paper so current time line corresponds to time line groove.5. Hold chart paper in place while making sure the chart knob is fully tightened. (Failure to fully tighten the knob can result in paper slipping and losing time.)

6. Press and hold C button. When stylus begins to move right, release button.7. Confirm stylus is marking on paper and stops at the correct temperature.8. Calibrate chart recorder to match primary temperature if needed and close recorder door.


360172-A/E 8

3 i.Series Operation3.1 Initial Start Up

1. Plug the power cord into a 15 A grounded circuit with a dedicated single point receptacle.2. Switch battery ON/OFF switch ON.3. Switch AC ON/OFF switch ON.

NoteThe Start screen is displayed when the i.C3 is powered on. The i.C3 monitoring and control system will take approximately three minutes to boot up.

Start screen

The language screen is displayed after the i.C3 is powered on. Use the Language screen to select the i.C3 display language.

Language screens

NoteEnglish is the default language.


360172-A/E 9

If an alarm sounds, temporarily mute the alarm by touching the Mute icon.

Home screen - alarm muted Muted icon

NoteActive alarms are displayed on the Home screen. If an alarm condition other than High Temperature occurs, refer to the service manual for troubleshooting.

3.2 Operation

Notes• Refer to the i.C3 User Guide for Ultra-Low Freezers for complete information regarding the i.C3 User Interface.• The i.C³ Home screen displays temperature and alarm information, and provides icons to gain access to other functions of

the i.C³.• After two minutes of inactivity, the screensaver will be displayed. To return to the Home screen, touch the screensaver.

Home screen Home screensaver


360172-A/E 10

3.3 Change Temperature Setpoint

NoteThe Temperature Setpoint toggle button can be accessed from either the initial Settings screen or the Device Control Settings screen.

> > Enter the Settings password. Select Temperature Setpoints. Touch minus (-) or plus (+) on spin box to change value.

Settings screen Device Control Settings screen

Notes• Default Settings password is 1234.• Default setpoint is -80.0 °C.


360172-A/E 11

3.4 Set Alarm Parameters

> > Enter the Settings password. Scroll down to select Alarm Settings. Touch minus (-) or plus (+) on spin box to set each alarm parameter.

Settings screen

Alarm Settings screens

Alarm settings control the circumstances and timing of alarm condition indicators displayed on the i.C³ Home screen.


360172-A/E 12

3.5 Active Alarms

Home screen with active alarm

Table 1. i.Series Active Alarms

Alarm Description

Primary Monitor Probe High Temp Primary monitor probe reading is above high temperature alarm setpoint

Primary Monitor Probe Low Temp Primary monitor probe temperature reading is below low temperature alarm setpoint

Probe Failure Probe not functioning properly

Ambient Probe High Temp Ambient temperature reading is above high temperature alarm setpoint

Ambient Probe Low Temp Ambient temperature reading is below low temperature alarm setpoint

Clean Filter Air filter is dirty, clean or replace filter

CO2 / LN2 Active CO2 / LN2 back-up refrigeration system is active

Refrigeration System

Refrigerant pressure is too highHigh stage compressor temperature is too highLow stage compressor temperature is too highHigh stage compressor has failedLow stage compressor has failed

Power Failure Power to unit has been disrupted

Door Open Door is open beyond user-specified duration

Low Battery Rechargeable battery voltage is low

No Battery Battery is not connected

Communication Failure Messages 1, 2, 3

1 Communication lost between i.C³ display board and control board2 Communication lost between i.C³ display board and internal system memory3 Corrupt database

Emergency Mode Control probe temperature sensor failed or is failing intermittently and refrigeration system is operating at 100% duty cycle (alarm is only displayed on Home Screen)

3.6 Mute and Disable Active AlarmsAudible alarms may be muted by touching the Mute icon to set delay. Touching the Mute icon repeatedly will increase the Mute timer incrementally.


360172-A/E 13

4 Min/Max Temperature MonitoringThe Min/Max temperature display provides the highest and lowest Primary Monitor probe temperature reading since the last system reset (power-on event) or manually-initiated reset. Touch the Reset icon to the right of the display to manually reset.

Notes

• The Min/Max temperature display can be turned on or off through Display Settings.• Once the time reaches the maximum display of 999 hours and 60 minutes, the message will display “>999:60”, but minimum and maximum temperatures will continue to be tracked.


360172-A/E 14

5 Access ControlAllows user-specific secure access to the freezer.

Notes• The Supervisor PIN must be used to set up user profiles.• The Supervisor PIN does not allow access to the unit. At least one user ID must be set up to gain access to the unit.• The Supervisor PIN should be changed to prevent unauthorized user ID setup. The Supervisor PIN can not be deleted.• In the event the Supervisor PIN is unavailable, contact Helmer Technical Service to reset the Supervisor PIN.• When setting up Access Control user IDs, ensure the key lock is in the locked position to prevent unauthorized access to the freezer.• The keys provided with the freezer may be used to lock or unlock the exterior door.• Refer to the i.C3 User Guide for i.Series Ultra-Low Freezers for complete information regarding Access Control.

5.1 SetupConfigure and manage multiple user-specific accounts to allow controlled access to the freezer.

> > Access Setup

Access Control Setup screen with password keypad overlay Access Control Setup screen

NoteThe Access Setup button can be found on the Users and Passwords screen or the Access Log screen.

Entry into Access Control Setup

1. Touch the Access Setup button. A numeric keypad is displayed.2. Enter the supervisor PIN (ifenteringforthefirsttime,usethefactorysupervisorPIN=5625).3. Touch to confirm. The keypad closes and the Access Control Setup screen is displayed.

Add a user profile

1. Touch the Add User button. An alphanumeric keyboard is displayed.2. Enter the User ID for the new user profile.3. Touch the to store the user ID. The numeric keyboard is displayed.4. Enter a 4-digit PIN for the new user profile.5. Touch the to store the user PIN. The User ID and PIN for the new user profile are displayed in the table.


360172-A/E 15

5.2 Open Freezer with Access Control

Access Control Keypad

Using Access Control to unlock the door

1. Enter unique 4-digit PIN.2. If a valid PIN is entered, the Padlock indicator appears open and the door is unlocked.


360172-A/E 16

6 Product Specifications6.1 Operating Standards ♦ Indoor use only ♦ Altitude (maximum): 2000 m ♦ Ambient temperature range: 15 °C to 32 °C ♦ Relative humidity (maximum for ambient temperature): 80% for temperatures up to 25 °C, decreasing linearly to 53% at 32 °C ♦ Temperature control range: -50 °C to -86 °C ♦ Overvoltage Category II ♦ Pollution Degree 2 ♦ RF Emissions: Group 1 - Class A ♦ EMC Environment: Basic ♦ Sound level is less than 70 dB(A).

NotePower conditioning (voltage boost) is an optional feature. If facility voltage is consistently at or below 195 V, voltage boost must be installed in order to protect the compressors.

Table 2. Electrical Specifications

Model 116 118 124 126Input Voltage and Frequency 208/230 V, 60 Hz

Voltage Tolerance ±10%

Circuit Breakers 12.0 A (quantity 2)

Current Draw 11.0 A

Energy Consumption 18.5 kWh/day 18.5 kWh/day 19 kWh/day 19 kWh/day

Power Source 15 A dedicated circuit

Boost Cut-in Voltage 195 V

Monitoring System Battery / Chart Recorder Battery 12 V, 7 Ah rechargeable sealed lead acid battery

Remote Alarm Capacity 0.5 A at 30 V (RMS); 1.0 A at 60 V (DC)

NOTICE• The interface on the remote alarm monitoring system is intended for connection to the end user’s central alarm system(s) that uses normally-open or normally-closed dry contacts.• If an external power supply exceeding 30 V (RMS) or 60 V (DC) is connected to the remote alarm monitoring system’s circuit, the remote alarm will not function properly; may be damaged; or may result in injury to the user.

NoteOverall exterior dimensions include casters, handle, i.C3 bezel, and door hinges

Table 3. Ultra-Low Freezer Specifications

Model Voltage Code Amps

Capacity Cu. Ft (Liters)

Dimensions Interior W x H x D in. (mm)

Dimensions W x H x D in. (mm)Net Wt. lbs (kg)Exterior Overall Exterior

iUF116 208/230 V 60 Hz 11.0

16(453)

23.1 x 49.5 x 23.3 (587 x 1257 x 592)

33.8 x 78.2 x 34.8 (859 x 1986 x 884)

37.1 x 78.2 x 37.5 (942 x 1986 x 953)

607(275)

iUF118 208/230 V 60 Hz 11.0

18(510)

23.1 x 54.1 x 23.3 (587 x 1374 x 592)

28.9 x 78.2 x 34.8 (734 x 1986 x 884)

32.5 x 78.2 x 37.5 (826 x 1986 x 953)

622(282)

iUF124 208/230 V 60 Hz 11.0 24

(680)34.4 x 49.5 x 23.3

(874 x 1257 x 592)45.1 x 78.2 x 34.8

(1146 x 1986 x 884)48.4 x 78.2 x 37.5

(1229 x 1986 x 953)704

(319)

iUF126 208/230 V 60 Hz 11.0 26

(736)34.4 x 54.1 x 23.3 (874 x 1374 x 592)

40.2 x 78.2 x 34.8 (1021 x 1986 x 884)

43.8 x 78.2 x 37.5 (1113 x 1986 x 953)

725(328)


360172-A/E 17

NoteVacuum-insulated panels are included in cabinet walls on indicated models. All models feature vacuum-insulated panels in the exterior door.

Table 4. Interior/Exterior Cabinet Specifications

Model 116 118 124 126Insulation Ecomate® insulating foam (non-ODP, non-GWP, and VOC-exempt blowing agent foam)

Vacuum-Insulated Panels - ü - ü

Wall Thickness 5.0” (127 mm) 2.7” (69 mm) 5.0” (127 mm) 2.7” (69 mm)

Door Thickness 2.7” (69 mm)

Internal Compartments 4 5 4 5

Shelves 3 Stainless steel 4 Stainless steel 3 Stainless steel 4 Stainless steel

Maximum Shelf Load 160 lbs (73 kg)

Internal Material Galvannealed steel with bacteria-resistant powder-coated finish

External Material Galvannealed steel with bacteria-resistant powder-coated finish

External Port 2, standard (top-left corner, rear of cabinet; bottom-left corner, rear of cabinet)

Vacuum Break Port Standard (heated)

Temperature Chart Recorder Optional, 4” (102 mm), 7-day inkless, pressure-sensitive chart paper, backup battery; ±0.5 °C (0.9 °F) accuracy

i.C3 Monitor ±0.5 °C (0.9 °F) at setpoint accuracy

Table 5. Refrigeration System Specifications

Model 116 118 124 126High Stage Refrigerant R-404A, CFC/HCFC-free

Low Stage Refrigerant R-508B, CFC/HCFC-free and R601 natural refrigerant

High Stage Compressor 1.5 HP, air-cooled

Low Stage Compressor 1.5 HP, air-cooled

High Stage Initial Charge 29 oz. (822 g +/- 14.2 g)

Low Stage Initial Charge (R508B) 13.5 oz. (383 g +/- 2.8 g) 15.3 oz. (434 g +/- 2.8 g)

Low Stage Initial Charge (R601) 0.77 oz. (22 g +/- 1 g) 0.89 oz. (25 g +/- 1 g)


360172-A/E 18

7 Compliance7.1 Regulatory ComplianceThis product is certified to applicable UL and CSA standards by a NRTL

7.2 Electromagnetic ComplianceThis device complies with FCC Radiated and Conducted Emissions Approval to CFR47, Part 15; Class A levels

Helmer Scientific Ultra Low Freezers meet the applicable requirements of IEC61326 and EN55011 and are intended for use in the electromagnetic environment specified in the Operating Standards section of this manual. The customer or the user of these devices should assure they are used in such environment.


360172-A/E 19

Appendix AApplication Icons

Icon Description Icon Description Icon Description Icon Description

Home i.C³ Applications Icon Transfer Save

Event Log Settings Download Cancel

Mute Temperature Graph Upload Back Arrow

Reset Information Log Access Control Scroll Arrows

Zoom Information Contact Helmer Access Log Temperature Graph Forward/Back Arrows

Zoom Out Display Brightness Alarm Conditions Battery Power


360172-A/E 20

Appendix BExterior Components

AB

C

D

EFG

H

I

J

K

LMN

O

P

Q

Label Description Label Description

A i.C³ user interface J Monitoring system backup battery ON/OFF switch

B USB port K Condenser discharge grill

C Door handle with key lock, electronic lock, and padlock hasp L RJ-45 Ethernet port

D Condenser grill and filter media M USB port

E Side panel (refer to side panel detail) N RS-232 serial port

F Temperature Chart recorder (optional) O Remote alarm interface

G Caster P LN2 / CO2 backup system interface

H AC ON/OFF power switch Q Power connector

I Circuit breakers Not shown

Leveling feet


360172-A/E 21

Interior Components

AB

C

H

I

DEFG

JK

NOTICE• Do not allow the storage rack to set on the top edge of a partially-open interior door when removing or replacing racks.• To avoid damage to the interior door hinges, do not apply upward or downward force to the interior doors.

Label Description Label Description

A Inner door F Shelf standard

B Inner door hinge G Shelf clip

C Inner door gasket H Inner door mullion gasket

D Chamber temperature sensor cover I Shelf

E Chamber temperature sensor wire cover J Inner door retaining clip

Not shown

Chamber / chart recorder temperature sensor (behind cover) K Inner door catch

END OF MANUAL


360172-A/E 22

Helmer Scientific14400 Bergen Boulevard, Noblesville, IN 46060 USA

Copyright © 2021 Helmer, Inc. 360172-A/E

Freezer Operation Manual

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